Boulogne-Billancourt, France

Jean Piret

This inventor holds 2 USPTO granted patents. Top assignee: Regie Nationale Des Usines Renault. Active years: 1977-1981.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Jean Piret. Retrieved from https://idiyas.com/inventor/jean-piret

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 2

Forward Citations = 32(Granted Patents)


Location History:

  • Boulogne-Billancourt, FR (1977)
  • Bougival, FR (1981)

Company Filing History:


Years Active: 1977-1981

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2 patents (USPTO):Explore Patents

Title: The Innovations of Jean Piret

Introduction

Jean Piret is a notable inventor based in Boulogne-Billancourt, France. He has made significant contributions to the field of automotive technology, particularly in the area of transmission systems. With a total of 2 patents to his name, Piret's work has had a lasting impact on vehicle performance and efficiency.

Latest Patents

Piret's latest patents include a "Transmission with Variator" and a "Hydraulic Control Device for Automatic Change-Speed Transmissions." The transmission with a variator is designed for automotive vehicles and features a system that allows for the disconnection of the variator by engaging a constant-ratio direct drive. This innovative engagement system operates as an either-or device. His hydraulic control device is specifically tailored for automatic change-speed transmissions in motor vehicles. It comprises a fluid reservoir, a pump, and a main pressure regulation valve that determines the line pressure. This device also includes a hydraulic circuit that feeds a series of hydraulic receivers through auxiliary regulation valves, enhancing the efficiency and functionality of automatic transmissions.

Career Highlights

Jean Piret is associated with Renault, a leading automotive manufacturer. His work at Renault has allowed him to develop and refine his inventions, contributing to the advancement of automotive technology. His expertise in transmission systems has positioned him as a key figure in the industry.

Collaborations

Piret has collaborated with notable coworkers such as Michel Jallas and Andre Lalin. These partnerships have fostered innovation and have been instrumental in the development of advanced automotive technologies.

Conclusion

Jean Piret's contributions to automotive technology through his patents and work at Renault highlight his importance as an inventor. His innovations in transmission systems continue to influence the automotive industry today.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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